IAM is most important thing in cloud security. Cloud computing has three paradigm SAAS, PAAS and IAAS. but to provide entry to any user to cloud first authentication has to happen and then authorization…

Identity and access management in short IAM tools provide cloud ability to validate user. There are many vendors on IAM lists..Authentication stops the non repudiation,.

The main task in security is to ensure Confidentiality , integrity, and Availability. Authentication validates confidentiality, while integrity and confidentiality is preserved by Authorization…because this i from where attacker may come in whether BI or any application.

While for SAAS and PAAS IAM palys very important role same way for IAAS takes it user specific deails from IAM. it plays vital role across securing software and well platform and infrastructure access.